-
公开(公告)号：US10917204B2
公开(公告)日：2021-02-09
申请号：US16273482
申请日：2019-02-12
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Ronny Hadani , Yoav Hebron
Abstract: A method for performing downlink transmissions from a transmitting device to multiple user devices using transmission resources from a multi-dimensional grid of resources is described. The method includes logically partitioning the transmission resources into multiple segments, assigning, to a given user device of the multiple user devices, transmission resources of one or more of the multiple segments, and performing, using at least some of the assigned transmission resources for the given user device, a downlink transmission using an orthogonal time frequency space (OTFS) transformation on data or signals to be transmitted to the given user device.
-
公开(公告)号：US10855425B2
公开(公告)日：2020-12-01
申请号：US16460851
申请日：2019-07-02
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Michail Tsatsanis
Abstract: A wireless communication technique to improve channel estimation using pilot signals includes receiving data symbols for transmission over a wireless communication channel using multiple antenna ports, generating a plurality of scrambling sequences, each corresponding to one of the multiple antenna ports, mapping, for each antenna port, a corresponding pilot signal to time and frequency transmission resources using a corresponding scrambling sequence, multiplexing a first input from the data symbols and a second input from the mapping of the corresponding pilot signal to generate an output signal, and transmitting the output signal over a wireless communication channel.
-
33.发明授权公开(公告)号：US10673659B2
公开(公告)日：2020-06-02
申请号：US16512055
申请日：2019-07-15
Applicant: Cohere Technologies, Inc.
Inventor： Ronny Hadani , Shachar Kons
Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.
-
公开(公告)号：US12119903B2
公开(公告)日：2024-10-15
申请号：US18456730
申请日：2023-08-28
Applicant: Cohere Technologies, Inc.
Inventor： Ronny Hadani , Shachar Kons
IPC: H04B7/0456 , H04B7/024 , H04B7/0452 , H04W52/14
CPC classification number: H04B7/0456 , H04B7/024 , H04B7/0452 , H04W52/143
Abstract: A wireless communication method includes determining, by a network device, uplink power allocations assigned to each user device of multiple user devices; estimating a channel response for each user device of multiple user devices based on a corresponding uplink reference signal transmission received from the each user device; computing, for the each user device, a covariance matrix based on a corresponding channel response, determining a maximum eigenvector of an uplink signal to interference and noise ratio (SINR) matrix for the each user device; computing, from the uplink SINR matrix, a downlink cross-interference matrix for the each user device; selecting, from the downlink cross-interference matrix for the each user device, a selected vector that maximizes a selected criterion for the each user device; and determining, from the selected vectors of the multiple user devices, a downlink power allocation for the each user device of multiple user devices.
-
公开(公告)号：US20240250851A1
公开(公告)日：2024-07-25
申请号：US18624914
申请日：2024-04-02
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Ronny Hadani , Paul Harris
IPC: H04L25/02 , H04B7/0413 , H04L5/00
CPC classification number: H04L25/0204 , H04B7/0413 , H04L5/0048 , H04L25/0224 , H04L25/0248
Abstract: A wireless communication method includes receiving, by a first wireless device during a training phase, reference tones using a first number of resource elements from a transmitter of a second wireless device, wherein the first wireless device comprises multiple receiving antennas, estimating, by the first wireless device, from the receiving the reference tones, a second order statistics of wireless channels between the multiple receiving antennas and the transmitter of the second wireless device, and performing channel estimation, during an operational phase subsequent to the training phase, using the second order statistics and reference tones received on a second number of resource elements, wherein the second number is less than the first number.
-
Patent Agency Ranking
公开(公告)号：US11451348B2
公开(公告)日：2022-09-20
申请号：US17139478
申请日：2020-12-31
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Ronny Hadani , Yoav Hebron
Abstract: A method for performing downlink transmissions from a transmitting device to multiple user devices using transmission resources from a multi-dimensional grid of resources is described. The method includes logically partitioning the transmission resources into multiple segments, assigning, to a given user device of the multiple user devices, transmission resources of one or more of the multiple segments, and performing, using at least some of the assigned transmission resources for the given user device, a downlink transmission using an orthogonal time frequency space (OTFS) transformation on data or signals to be transmitted to the given user device.
-
公开(公告)号：US11418300B2
公开(公告)日：2022-08-16
申请号：US17251960
申请日：2019-06-12
Applicant: Cohere Technologies, Inc.
Inventor： Christian Ibars Casas , James Delfeld , Yoav Hebron , Shachar Kons
IPC: H04L5/00 , H04L27/26 , H04B7/0456 , H04W4/06 , H04W72/04
Abstract: Co-existence between an Orthogonal Time Frequency Space (OTFS) modulation system and a Long Term Evolution (LTE) system is achieved by generating a number of transmission beams for a first group of user equipment operating using LTE, and a second group of user equipment operating using the OTFS protocol, and transmitting a first group of data packets formatted according to the LTE protocol to the first group of user equipment and a second group of data packets formatted according to the OTFS protocol to the second group of user equipment. The transmissions are performed by precoding and modulating the first group of data packets according to an LTE modulation scheme, and precoding and modulating the second group of data packets according to an OTFS modulation scheme.
-
公开(公告)号：US11329848B2
公开(公告)日：2022-05-10
申请号：US17251765
申请日：2019-06-13
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Ronny Hadani , Paul Harris
IPC: H04L25/02 , H04B7/0413 , H04L5/00
Abstract: A wireless communication method includes receiving, by a first wireless device during a training phase, reference tones using a first number of resource elements from a transmitter of a second wireless device, wherein the first wireless device comprises multiple receiving antennas, estimating, by the first wireless device, from the receiving the reference tones, a second order statistics of wireless channels between the multiple receiving antennas and the transmitter of the second wireless device, and performing channel estimation, during an operational phase subsequent to the training phase, using the second order statistics and reference tones received on a second number of resource elements, wherein the second number is less than the first number.
-
公开(公告)号：US20210288765A1
公开(公告)日：2021-09-16
申请号：US16336823
申请日：2017-09-29
Applicant: Cohere Technologies, Inc.
Inventor： Christian Ibars Casas , Shachar Kons , Ronny Hadani
Abstract: A wireless communication method for transmitting wireless signals from a transmitter includes dividing bits of the transport block into a number of code blocks, wherein each code block corresponds to a bit-level of a multi-level modulation scheme used for transmission, and wherein a size of each code block is inversely proportional to a corresponding coding rate used for coding the code block.
-
公开(公告)号：US20210135905A1
公开(公告)日：2021-05-06
申请号：US17251765
申请日：2019-06-13
Applicant: Cohere Technologies, Inc.
Inventor： Shachar Kons , Ronny Hadani , Paul Harris
IPC: H04L25/02 , H04L5/00 , H04B7/0413
Abstract: A wireless communication method includes receiving, by a first wireless device during a training phase, reference tones using a first number of resource elements from a transmitter of a second wireless device, wherein the first wireless device comprises multiple receiving antennas, estimating, by the first wireless device, from the receiving the reference tones, a second order statistics of wireless channels between the multiple receiving antennas and the transmitter of the second wireless device, and performing channel estimation, during an operational phase subsequent to the training phase, using the second order statistics and reference tones received on a second number of resource elements, wherein the second number is less than the first number.
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.022 seconds)
